put a 4th field in the create new course form where the user must specify a course_run. Also update unit tests to also provide this 4th parameter. Styling changes to better lay out the form fields are still TBD.
fix small - and harmless - typo in a test field setting
Studio: adds a space back to the phrase 'Welcome to edX Studio' that went missing
Studio: revises spacing fix for welcome to edX studio title
Correctly persist checklist settings.

Incidentally, fixes an acceptance test (which would have caught this
bug) not running. Its step regex was "They are correctly selected
after I reload the page$", which happens to be matched by "I reload
the page$", another step definition. Lettuce seems to arbitrarily pick
between definitions if they both match a step, so it's good to ensure
that each step isn't a sub-regexes of another.
overhaul of the studio course creation form html and sass
removed hardcoded error text from course creation form
change help text on course create - Course names can be changed, but not the org, course, or run